1. Comparison Ch01 and 03 Development of deep convection
Development phase
Contact person:
Veronika Zwatz-Meise
Version July 2004

2. CH01; 10.30 Ch01: black cloudfree Ch01: black Ch01: white cloudfree

3. CH03; 10.30 Ch01: black Ch03: black Ch01: black cloudfree Ch01: white
start of icing
(!?)

4. CH02; 10.45
Ch01: white
cloud

5. CH03; 10.45
Ch01: white
Ch03: black
continued icing
(!?)

6. CH01; 11.00
Ch01: white
cloud

7. CH03; 11.00
Ch01: white
Ch03: black
continued icing
(!?)

8. CH01; 11.15
Ch01: white
cloud

9. CH03; 11.15
Ch01: white
Ch03: black
continued icing
(!?)

10. CH01; 11.30
Ch01: white
cloud

11. CH03; 11.30 Ch01: white Ch03: black continued icing but:
different greyshades

12. CH02; 11.45

13. CH03; 11.45

14. CH01; 12.00

15. CH03; 12.00

16. CH01; 12.15

17. CH03; 12.15 Development of grey shade structure within
the big dark area

18. Probable evaluation potential
Darkening in Ch03 can be determined quantitatively and automatically
Can be used together with the deviation images (difference of motion corrected images) for the life cycle of cells

19. Further development of convective cells

20. CH01; 12.30

21. CH03; 12.30

22. CH01; 13.30

23. CH03; 13.30

24. CH01; 13.45

25. CH03; 13.45

26. CH01; 14.15

27. CH03; 14.15

28. CH01; 14.30

29. CH03; 14.30

30. CH02; 14.45

31. CH03; 14.45

32. Development of deep convection: „phase of icing“
Comparison Ch01,03 RGB 134, 149
Development of deep convection:
„phase of icing“

33. CH03; 10.30 Ch01: black Ch03: black Ch01: black cloudfree Ch01: white
start of icing
(!?)

34. RGB134; 10.30
orange:
area of
begin of icing

35. RGB149; 10.30
Some magenta dots
but not as indicative
as 134

36. Development of deep convection „phase of MCSs and merger of MCSs“
Comparison Ch01,03,09, RGB 134, 149
Development of deep convection
„phase of MCSs and merger of MCSs“

37. CH01; 14.15

38. CH09; 14.15

39. CH03; 14.15 Different greyshades from nearly black to light grey;
synoptic interpretation:
combined signal from
water and ice cloud (?)

40. RGB134; 14.15

41. RGB149; 14.15